/*
 *
 * Copyright (C) 2012 Walter Lütgenau
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */
package offset.nodes.server.servlet.book.provider;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Walter L�tgenau
 */
public class StreamResponseWrapper extends WriterResponseWrapper {
    class ByteArrayServletOutputStream extends ServletOutputStream {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        @Override
        public void write(int b) throws IOException {
            out.write(b);
        }

        public byte[] toByteArray() {
            return out.toByteArray();
        }

        public int size() {
            return out.size();
        }

    }

    private ByteArrayServletOutputStream outputStream;
    private String contentType = null;

    public byte[] toByteArray() {
        if (outputStream.size() > 0)
            return outputStream.toByteArray();
        return getOutputWriter().toString().getBytes();
    }

    public StreamResponseWrapper(HttpServletResponse response) {
        super(response);
        outputStream = new ByteArrayServletOutputStream();
    }

    public ServletOutputStream getOutputStream() {
        return outputStream;
    }

    public void setContentType(String type) {
        this.contentType = type;
    }

    public String getContentType() {
        return contentType;
    }
}
